I have a 598ci that is upgraded to the HDSI transducer. I have this unit set up as a portable as I fish out of different boats as part of a fishing club.
Last week I visited a lake where the owner kept a photo book of the lake's construction on the coffee table in the guest cabin. I was encouraged that I was able to locate much of the structure in the book on my SI unit. I am interested in garnering suggestions on tweaking the settings based on the screenshots. Seems the sensitivity may need to be increased to show further definition of structure/cover. Also, I was not able to discern many fish (other than bait) on the screen shots, but the lake is absolutely full of shad, tilapia, and bass. The largest bass caught was 8.4 on a buzzbait.
Most of what I noticed in the screenshots was only after I uploaded to my computer after the trip. Given the smaller screen of the 598, perhaps I need to be using the zoom more and trying to interpret in real time.
The pictures show huge piles of logs (trees) that were assembled from cleared timber, as well as a sunken van/truck.
I am anxiously awaiting the release of Lakemaster AutoChart and the ability to create maps of these private lakes.
Any/all suggestions appreciated.